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• -I 3- • <br />Stream Channel Reconstruction <br />Rules 4.05.3 and 4.05.4 includes performance standards for stream channel recon- <br />struction. The applicant has submitted information (Section 4.8.1.3 - Post- <br />mining Surface Drainage, Map M12, and Map M14) concerning the reconstruction <br />of disturbed stream channels. However, this information was insufficient to <br />find compliance with the performance standards. During further discussions <br />it was determined that all drainages concerned drained areas of less than one <br />square mile. Furthermore, only two of the ephemeral drainages to be disturbed <br />had distinct channels in their pre-mine configuration. <br />The applicant has committed to reestablishing channels in these drainages (East <br />and west No Name Gulch) after mining. Specifics of channel reconstruction are <br />delineated on pages 4-Z80 and 4-18Z.of the permit application. <br />Alternative Water Svoolg Information <br />During the course of the review questions were raised as to whether the mine would <br />affect the amounts of water into the Loudy-Simpson dam or the McNamara ditches, It <br />was determined that the Loudy-Simpson dam is not an actively used structure, nor <br />are there any water rights associated with it which would be affected. The <br />McNamara ditches are fed entirely from a ground water well and have no corre- <br />sponding surface water right. Therefore, these concerns were alleviated. <br />Monitoring <br />The applicant has committed to monitoring of the surface water quality parameters <br />of total suspended solids, total dissolved solids, conductivity, pH, total iron, <br />total manganese, acidity and oil and grease at eight surface water monitoring <br />stations. For the majority of these sites, the proposed monitoring frequency <br />and the Iist of parameters monitored is satisfactory. During the five-year permit <br />term, the majority of mining will occur in the Johnson and No Name Gulch drain- <br />ages. Portions of the pits will be used as coal ash disposal sites (see page 4- <br />z4z). <br />A potential exists for ground water to seep into surface water systems. It is <br />probable that ground water contributions to the surface water system will be <br />small. However, it is possible that parameters other than those proposed for <br />surface water monitoring may enter the surface water system in detrimental con- <br />centrations. For this reason, the applicant has committed to monitoring sites <br />S-5 and 5-19 twice annually for aluminum, arsenic, barium, boron, cadmium, <br />chromium, copper, iron, lead, pH, manganese, molybdenum, nickel, selenium, <br />vanadium, nitrate, sulfate, floride, total dissolved solids, conductivity, <br />temperature and Radium 226. <br />The operation is in compliance with the requirements of this section. <br />yi. Hydrologic Balance: Ground water (Rules 2.04.5, 2.04.7, 2.05.3(4), <br />2.05.6(3) and 9.05) <br />The Division has reviewed Sections 2. 7, 4.2, 4.3, .4z+ ;~' ix N for <br />crompliance with the requirements of this section. <br />The White sandstones (1st, 2nd and 3rd) are stratigraphically located about <br />20-50 feet above the N coal seam, a seam to be recovered at the Trapper Mine <br /> <br />